Peening machine



Patented Jan. 25, 1949 I PEENING MACHINE William J. Cahill, Merion, Pa., assignor to Carrier Corporation, Syracuse, N. Y., a corporation of Delaware Application June 21, 1944, Serial No. 541,359

3 Claims. 1

This invention relates to apparatus for formin joints in duct work and more particularly to apparatus for facilitating the speedy seaming of peened joints in round duct work including the peened joints of the sections of an elbow for round duct work.

Prior to the instant invention, peened joints for round duct work'have been made by hand and by apparatus requiring relatively highly skilled operators and capable of performing but a specialized operation or operations.

It is an object of the instant invention to provide apparatus for the turning and forming of a peened sheet metal elbow seam which can be operated with a minimum of effort and requiring a minimum of skill on the part of the operator.

It is another object of the instant invention to provide an apparatus of novel design for fabricating a seamed elbow joint for round duct work by turning the preformed edge of one portion of the work over and about the preformed edge of another portion of the work and locking the two 7 edges together to form a joint.

It is still another object of the instant invention to provide an apparatus for forming seamed joints in duct work which will hold the work tightly in a novel manner from the bottom and both sides while the joint is being formed.

Other objects and the nature and advantages of the invention will be apparent from the following description taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a view in elevation of the apparatus in accordance with the invention; and

Fig. 2 is a fragmentary view partly in elevation and partly in section with the work in place and about to be worked upon by the apparatus.

Referring to the drawings, the pulley H) which is driven by a motor, not shown, is arranged to drive the horizontal shaft i l which in turn drives the vertical shaft 52 through the worm i 3 on shaft H which worm is cooperates with a gear at the bottom of shaft l2. Rotating motion is transmitted from the shaft [2 to the shaft l4 through the cooperating bevel gears l5 and Hi. The roll ii is fixedly securedto the shaft !4 and rotates therewith.

Fixedly secured to the rotatable shaft I4 is the gear wheel 58 which meshes with and drives the gear wheel 55 which is fixedly secured to the rotatable shaft 2e. Cooperating with the roll I! is the roll 2! which is fixed to shaft so that it is rotatable therewith.

The rod 22, the bottom portion of which is connected to a first foot pedal, not shown, is connected at its top portion to the wedge-shaped cam 23 and is adapted to coact with the wedgesha-ped actuating member 24 for causing movement of rotatable shaft 25 to the right, thereby causing the enlarged head 26 on the shaft 25 to bear against roll '21 and bl'illglt towards the roll 21' against the action of the spring 28 which is normally under compression. When enlarged head 26 of shaft 25 comes in contact with roll 21 in engagement with the rotating work pieces, shaft 25 is rotated. Roller bearing 29 serves to reduce friction created by contact with member 24 which might interfere with proper peening of the work pieces.

The rod 36, the bottom portion of which is connected to a second foot pedal, not shown, is pivotally connected at its top portion 3| to the lower end of the rocker element 32 which rocker element is pivotally fixed at 33. The upper end of the rocker element 32 is pivotally connected at 34 to the link 35 at the right end of the link. The left end of the link 35 is pivotally connected at 36 to the outer end of the lever arm 31. The inner end of the lever arm 31 rotates about the shaft 38 to which is fixedly secured the cam 39 which is adapted to coact with the element 40 secured totheupper roll drive shaft assembly 4t which is pivotally mounted at'42. Rotation of the cam 39 in a clockwise direction places the spring 43 under compression and eifects'movement of the upper roll drive shaft assembly toward thelower drive shaft l4 until the shafts 2B and 25 are parallel to the shaft 14 and the rolls 2| and 27 are adjacent r011 IT.

The shafts H, l2,and M are mounted for rotation within a fixed built-up frame assembly F whereas the upper roll drive shaft asembly M is pivotally mounted to the frame at 42. The rocker element 32 is pivotally mounted to the frame at 33 and the shaft 38 to which is secured the lever arm 3'l, is also mounted for rotation on the frame: When there is no pressiu'e on the first foot pedal connected to the bottom of the rod 22, the spring 28 which is under compression will force the shaft 25 to the left so that'the enlarged head 25 disengages from the roll 21 so that it is no longer in coacting relationship with roll 21' and the roll ll. Simultaneously, the roller bearing 29 is disengaged and rotation of the shaft'25 may cease. When there is no pressure on the foot pedal connected to the bottom of the rod 30, the spring 43 which bears at its bottom against the frame, will force the bolt 44 upwardly and carry with it the element 40 and the upper roll drive shaft assembly will be raised from its position shown in Figure 1.

In operating the machine, the elements of Work 45 and 46 are located between the rolls I1, 21 and 2|, as shown in Figure 2, in such a manner that the vertical inner face 41 engages the back of the preformed partially turnedover edge of the work element 45 and the vertical inner face 48 of the roll 2| engages the front side of the preformed partially turned over edge of the work element 45. The work element 46 is arranged on roll I1 in such a mannertli'at its" preformed edge will take aposition'againstthe preformed edge of the works element 45 vandtbe'e tween the front and back of the turned over edge of the work element 45 when the inner face 4'l and curved portion 49 of the roll 2T and" the vertical face 48 of the roll 2| cooperatewitlithe? roll I! to bring the preformed edges together in theform of a turned overlooked; peened joint. The cylindrical face 50 of the roll 21 cooperates with the cylindrical surface of the-roll 2| in pis'ton-cylinder-like relationship under the infiuence of either the compression spring 28 when the first foot pedal connected to rod 22 is released or against the influence of the spring 28 when pressure isapplied to the first foot pedal. The preformed edges. of the work elemerits 45 and 46 are formed on other machines,

not shown. n e

With the work in place asshown in .Fig. 2 and with pressure applied to the firstfoot pedal to bring the enlarged head 25 against the roll: 21 and in turn carry it toward'the' roll 2], pressure is then applied to the second footp'eda'l causing the upper roll drive assembly to be lowered toward the bottom roll FL During these foot pedal operations, the shafts l4 and 25 areconstantly rotating so thatthe rolls 2|, 2T and" ll are rotating in the position shown in Fig; 1 and I thelocked peened joint is formedon-theelements in work. 7 e i I i e 7 After the joint has been formed, the first and second foot pedals are released thereby causing roll 21 to move away from the roll 2l auto matic'ally and the upper roll drive shaft assembly to automatically move away from the roll 11 thus completely releasing the jointed work and permitting the insertion o'f suc'ceeding, work. I

As the drivethrough the pulley I0 is continu'-- ous, the operator need only arrange the work within the machine, operate the first and second foot pedals and remove the work. A single oper ator may produce a maximum amount of work with the use of the machine and-accurate, neat and tight joints will be formed without exacting from or requiring a great deal of skill on the part of the operator.

For the purpose of adjusting the operation of the machine involving the movement of the upper roll drive shaft assembly; the turnbuckle 52 is provided by means of which the link 35 may be shortened or lengthened. For the purpose of adjusting the action of the roller bearing 29 the wedge-shaped cam 23 may be locked in a position slightly upwardly or downwardly with respect to the rod 22 by means of the adjustingelement 53.

It will be obvious to those-skilled in' the art that various changes may be made in this device without departing from the spirit of the invention and therefore the invention is not; limited to what is shown in the drawings and described 4 in the specification but only as indicated in the appended claims.

What is claimed is:

1. In apparatus for forming a peened joint, the combination of a base roll assembly including a rotatable roll, a continuous drive for driving said roll, a cooperative roll assembly including a first roll and a second roll coaXially arranged with respect to the first roll, the cooper'ativ'e assembly being pivotally mounted in the secd'ii'cl roll toward the first roll, means for connectihg' the cooperative roll assembly to the drive, a'ncl means for moving the cooperative roll assembly teiva'rdand from the base roll assembly including a rod, a rocker element connected to the rod, the rocker element being pivotally mounted on the frame of the device, a lever, a shaft, said lever being" mounted on said shaft, alink connecting-the lever to-the rocker element, a cam mounted on said shaft, an element secured to the cooperative rollassembly adapted tocoactwith saidcam, rotation of saidcam moving the cooperative roll assembly toward the base roll assembly, and yieldable means resisting themovement of the cooperative rollassembly toward the base roll assembly.

2. In apparatus forforming a peened joint, the combination of a base roll assembly including a rotatable roll,-acontinuous drivefor rotating said roll, a cooperative roll assembly including a first roll, a shaft supporting saidfirst roll; saiddrive rotating said shaft, a second roll coaxially arranged with respect to the first roll, yieldable means" for urging the second" roll in an axial direction away from the first roll, a second shaft extending within the first shaft, meanson said second shaft adapted to engage the second roll, means for moving the second shaft to urge the secondroll in an axial direc tion toward the first roll and means for moving the cooperative roll assembly toward and from the base'ass'embl'y, including a rod, a rocker element connected to the rod; the rockerelement being pivotally mounted on the frame of the device, alever, a shaft, said lever being mounted on said shaft alink connecting the lever to the rocker element; acam mounted on said shaft, an element secured to the cooperative roll assembly adapted to coach with said cam, rotation of said cam moving the cooperative roll assembly toward the base roll assembly and yieldable means resisting the movement or the cooperative rollass'embly toward the base roll assembly.

3; In apparatus for forming a peened joint, the combination of a base rol'l' assembly including a rotatable roll, acontinuous drive for rotat ing said roll, a cooperative roll assembly, said- 0nd roll axially toward the first roll to place the rolls in adjacent position, yieldable means for urging the second roll axially in an opposite direction when said second shaft is moved in an 5 opposite direction, and means for moving said REFERENCES CITED cooperative r011 assembly toward and from the The following references are of record in the base assembly, including a rod, a rocker element me of this patent. connected to the rod, the rocker element being pivotally mounted on the frame of the device, 5 N TED TATES PA ENT a lever, a shaft, said lever being mounted on Number Name Date said shaft, a link connecting the lever to the Re. 11371 Sekowsky 13, 1900 rocker element, a cam mounted on said shaft, 73,635 Noyes Jam 21, 1868 an element secured to the cooperative roll as- 93 1 gushing 3, 1869 sembly adapted to coact With said cam, rotation 10 220 99 ROSS 001- 1379 of said. cam moving the cooperative roll assembly 1,373,164 Tumquist 23 1 toward the base roll assembly, and yieldable 1,903,521 Lindgren May 9, 1933 means resisting the movement of the cooperative roll assembly toward the base assembly. FOREIGN PATENTS 15 Number Country Date WILLIAM J. CAH'ILL. 65,5 99 Germany Nov. 22, 1892 

